What does a new bathroom design cost in Cornwall?
Design has no separate fee on a supply-and-fit job. A complete fitted bathroom in Cornwall typically costs £6,600–£12,250 including VAT.
Survey and layout
- Written, itemised quote
Detailed design
- Elevations and tile layouts
Full project
- One contract and one team
Guide prices for Cornwall including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in Cornwall?
Water across much of Cornwall is soft. That leaves you free to choose matt black, brushed brass or clear glass without worrying much about limescale. Hardness varies street by street, so check the figure for your postcode with your water supplier. For loft rooms and sloping ceilings in Redruth homes, the design checks head height where you stand, not just the floor area.
What the job includes
- Elevations and tile layouts on a design, supply and fit project, so the setting-out is agreed before tiling starts
- Checks on the soil stack, waste routes, joist direction, water pressure, hot water system and existing electrics
- A measured survey of the room, including ceiling heights, slopes, window and door positions and any boxing
- Layout options drawn to scale, showing the bath or shower, WC, basin, storage and towel rail
- A conversation about who uses the room, when, and what does not work about the current one
- A product list covering the suite, brassware, furniture, tiles, lighting and ventilation
Decisions to make first
Tile setting-out
Centring tiles on the window, basin or niche avoids thin slivers at the edges. Large tiles mean fewer joints but need flatter walls.
The door
Re-hanging the door on the other side, fitting a sliding pocket door or moving the opening can free up a whole wall in a small room.
Storage
Fitted furniture, a vanity with a tall cupboard, or recessed niches and a mirror cabinet. Recessed storage costs no floor space but needs a stud wall or deep boxing to sit in.
Keep or change the layout
Keeping the WC and shower where they are saves on plumbing. The WC is the costly one to move, because it is tied to the soil stack.
Rules that apply in England
Changing the layout inside an existing bathroom does not need planning permission. The design does have to respect the electrical zones around the bath and shower under BS 7671, the water fittings rules for new WCs and taps, including a maximum 6-litre flush, and adequate extract ventilation. Listed buildings need listed building consent for alterations affecting their character, including new soil or vent pipes through walls, and in a flat the lease often requires freeholder consent for moving the WC or adding a new vent.
In England, a new connection to the soil stack or new drainage can be building regulations work under Part H, and new circuits or alterations to circuits in the bathroom are notifiable under Part P. Where a new bathroom is formed, Approved Document F asks for extract at 15 l/s intermittent or 8 l/s continuous.